This thesis studies the influence of tempering on the performance of carbon steel Č.1531, and
alloy steels Č.4731, Č.5432, and determining the optimal parameters from obtained results.
The theoretical part gives a short overview of the structure and performance of steel, heat
treatment and test methods.
The experimental part includes the preparation of test samples (heat treatment - tempering and
metalworking operations), testing of the mechanical properties and finally analyzing the
results.
By analyzing the results obtained from mechanical tests, optimal steel tempering parameters
were determined.